Component separating device and method of separating component

Abstract

A component separating device includes a substrate, a fluid channel provided at the substrate, an actuator and a groove provided at a surrounding of the actuator, the fluid channel contains a fluid including a liquid component and a solid component, and the actuator generates a standing wave at inside of the fluid channel. By such a constitution, a vibration loss is reduced by reflecting a vibration by the groove to be transmitted to a side of the fluid channel, the standing wave having a strong intensity is generated at inside of the fluid channel, and the small-sized highly accurate component separating device is provided.

Description

[0001]This Application is a U.S. National Phase Application of PCT International Patent Application No. PCT / JP2006 / 308542, filed Apr. 24, 2006.TECHNICAL FIELD[0002]The present invention relates to a component separating device and a method of separating a component for separating a fluid mixed with a liquid component and a solid component, represented by blood, milky liquid or the like into respective components.BACKGROUND ART[0003]As a fluid mixed with a solid component and a liquid component, for example, river water, sea water, blood, milky liquid or the like is included. Solid components of sand, bacteria, blood cell, emulsion or the like included in the fluids are present at inside of the fluids in a state of precipitation, dispersion or the like. That is, the solid component is present as a solid without being dissolved in the liquid component.[0004]An explanation will be given of a method, a device of separating the fluid mixed with the solid component and the liquid componen...

AI Technical Summary

Benefits of technology

[0012]The invention provides a component separating device and a method of separating a component capable of separating respective components highly accurately even by a small amount of a sample by generating an acoustic standing wave having a strong intensity.

[0013]A component separating device of the invention includes a substrate, a fluid channel provided at the substrate, an actuator and a groove provided at a surrounding of the actuator. The fluid channel contains a fluid including a liquid component and a solid component, and the actuator generates a standing wave at inside of the fluid channel. By this constitution, a vibration loss is reduced by reflecting a vibration by the groove to be transmitted to a side of the fluid channel, the standing wave having a strong intensity is generated at inside of the fluid channel to provide a small-sized and highly accurate component separating device.

[0014]A method of separating a component of the invention includes a fluid containing step, a standing wave generating step, a reflecting step and a separating step. At the fluid containing step, a fluid including a liquid component and a solid component is contained in a fluid channel provided at a substrate. At the standing wave generating step, a standing wave, which has a node at an inner portion of the fluid channel, is generated by generating a vibration by applying a high frequency voltage to a plurality of actuators provided to be opposed to the fluid channel to thereby. At the reflecting step, the vibration reflects at a groove provided at a surrounding of the actuator, the groove is provided at the surrounding excluding a side of the fluid channel, and at the separating step, at least either one of the liquid component and the solid component is separated from the fluid. By this constitution, a vibration loss is reduced by reflecting the vibration by the groove to be transmitted to the side of fluid channel, the standing wave having a strong intensity is generated at inside of the fluid channel to thereby provide the highly accurate method of separating the components.

Problems solved by technology

In separating the components by the centrifugal separator, in view of operation of the centrifugal separator, a constant amount or more of a fluid is needed and the separation is not suitable so much when a sample amount is small.

Thereby, there is not a freedom of designing the ultrasonic transducer, further, it is difficult to accurately position the duct and the ultrasonic transducer.

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